Core Sensor 4 / 4S Pro Tectanium 2 Front Line Set 18+4+2 – Core Kiteboarding The Core Sensor 4 / 4S Pro Tectanium 2 Front Line Set is a high-performance replacement front line system designed for maximum strength, precision, and durability. Made from advanced Tectanium® material, these lines are extremely strong, low-stretch, and shrink-resistant, ensuring long-lasting and consistent kite control. This modular setup (18m + 4m + 2m) allows for easy replacement and fine-tuning of your line length without needing to replace a full set. It is designed for riders who demand reliable performance in all conditions. Features: Compatible with Core Sensor 4 and 4S Pro bar systems Modular front line set (18m + 4m + 2m) Made from high-performance Tectanium 2® material Extremely strong and low-stretch construction Shrink-resistant for long-term consistency Designed for precise and responsive kite control Follow the video below for step-by-step instructions on how to install or replace this component.